gǎi / gé / kāi / fàng / chū / qī / xǔ / duō / sān / zī / qǐ / yè / jìn / rù / zhōng / guó / shì / chǎng

改革开放初期，许多三资企业进入中国市场。

In the early period of reform and opening up, many foreign-funded, private, and joint ventures entered the Chinese market.